Weft-replenishing mechanism



Sept. 30 l 924.

1,509,933 'J. R. COPLAND V WEFT REPLENISHING MECHANISM 2 Sheets-Sheet 1 Filed Nov. 9. 1921 J. R. COPLAND WEFT REPLENlSl-IING MECHANISM Sept. 30 .11924. 1,509,933

Filed Nov. 9'. 1921 2 Sheets-Shea! 2 JX-Q) L'CHOXL/ XCJXKD Patented Sept. 30, 1924.

UNITED STATES PATENT OFFICE.

JAMES R. OOPLAND, or DANVILLE, VIRGINIA, Assrerion TO CRO'MP'I'ON & KNOWLES LOOM WORKS, or woncnsmnn, MASSACHUSETTS, A conronarroiv 0F MASSA- GHUSET'IS.

WEFT-REPLENISI-IING MECHANISM.

Application filed November 9, 1921. Seria1 No. 514,060.

To all whom it may concern.

Be it known that I, JAMES R. GorLAND, a citizen of the United States, residing at Danville, in the county of Pittsylvania' and State of Virginia, have invented a new and useful Weft-Replenishing Mechanism, of which the following-is a specification.

This invention relates to weft replenishing mechanism and particularly to certain improvements in weft replenishing mechanism of the stationary magazine type. In such mechanism a storage magazine is provided in which a plurality of weft carriers are disposed in vertical series. Such magazines commonly contain from two to six different colors or kinds of weft carriers or bobbins, and it frequently happens that one or more of these different kinds is used very infrequently in a particular fabric, so that certain weft carriers may remain in the loom for an extended period of time. Under such conditions it has been found that the vibratory movements of the weft carriers cause chafing or rubbing of the carriers on each other which, if long continued, may weaken the outside layer of yarn, with resulting weft breakage when the weft carrier is finally transferred tothe shuttle.

It is an important object of my invention to provide means for preventing such vibratory movements of the weft carriers so that this weakening of the weft yarn may be prevented.

Another object of my invention is to provide an improved and simplified yielding support for the tip of a weft carrier when in transfer position.

I have also provided improved mechanism for releasing an indicated weft carrier which fails of transfer, said mechanism being directly controlled from the shuttle placer.

My invention further relates to arrange ments and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which- Fig. 1 is a side elevation of a weft carrier embodying my improvements;

Fig. 2 is a front elevation thereof;

3 is a sectional side elevation taken along the line 33 in Fig. 2;

Fig. 4 is a plan view of certain parts of the mechanism shown in Fig. 2;

Fig. 5 is a side elevation of certain parts shown in Fig. 1 but with the parts in a different position, and v Fig. 6 is a detail front elevation taken along the line 6-6 in Fig. 1.

Referring to the drawings, I have shown a weft replenishing mechanism which is in general of a usual type and comprises a magazine frame 10 fixed to the loom frame 11 and an end frame 12 secured to the frame 10 by supporting or cross rods 13. The frame 10 of the magazine is provided with a series of projections 14 forming vertical pockets or guideways for the different series of weft carriers. Similar projections 15 on the end frame 12 form guideways for the tips of the weft carriers.

Adjacent each vertical series of weft car'- riers I have provided vertical plates 16 each mounted on spring arms 17 and each preferably having a facing 18 of leather or other suitable friction material. Thcarms 17 are suitably secured to fixed portions of the magazine, the outer arms being conveniently mounted directly upon the frame 10 and the inner pair of arms being secured to a collar 19 fixed on one of the cross rods 13.

Each friction plate is so positioned that it will exert a light friction pressure on its adjacent vertical series of weft carriers. This friction pressure is sufficient to prevent the vibratory movements of the weft carriers which would otherwise be caused by the operation of theloom, while at the same timethc plates do not interfere with the necessary downward feed of the weft car riers in the guideways.

It has been found by practical experience that the wear and weakening of the yarn above referred to is practically eliminated when my friction plates are used in a magazine.

Another in'iprovcment in my weft replenishing mechanism is best shown in Fig. 3 and comprises a pair of spring plates 20 fixed to the end frame 12 and yieldingly supporting the tip of the bobbin or weft carrier XV. When the weft carrier is transferred, the plates 20 yield sufficiently to permit the passage of the weft carrier tip while at all other times they firmly support the weft carrier.

My improved weft carrier releasing mechanism is best shown in Figs. 1, 5 and (5 and comprises a weft carrier supporting member 21 yieldingly mounted on a stud 22 fixed in the magazine frame 10. A coil spring 23 (Fig. 6) has one end collar 2+1 on the stud 22. The supporting member 21 has a rearwardly extending arm 25 having a pin and slot connection with alink 26. At its upper end, the link 26 is pivoted on a stud 27 in the end of an arm 28 fixed to a rock shaft 29 supported in bearings 30 on the frame 10.

The rock shaft is provided with the usual resetting fingers 31 and also with an arm 32 having the usual toggle connection with a rod 38 by which the latch 34 may be moved to revoke the transfer of an indicated weft carrier A second rod con nects a shuttle placer 36 through the toggle mechanism and the arm to the shaft 29.

The shuttle placer and its connections for controlling the shaft 29 and the latch 34 in themselves form no part of my present invention and are fully shown and described in the prior patent to Regan and Moi-ell, No. 1,259,667, issued March 19, 1918.

lVhen the shuttle placer 36 is raised by a widely misplaced shuttle, the transfer is revoked and at the same time the weft carrier support 21 is withdrawn (Fig. to simultaneously release the weft carrier W which had been advanced to transfer position. The pin and slot connection of the arm 25 with the link 26 permits the support 21 to be forced outward by the weft car rier in its regular transfer movement, without causing resultant movement of the link 26 and shaft 29.

Having thus described my invention it will be evident that changes and modifications can be made therein by those skilled in the art within the spirit and scope of my invention as set forth in the claims and I do not wish to be otherwise limited to the details herein disclosed but what I claim 1. In a weft replenishing mechanism, a

magazine having a plurality of vertical compartments, means to position a plurality of weft carriers in vertical series in said compartments, and a vertically (lisposed friction plate extending substantially the entire height of each compartment and adjacent each vertical series of weft carriers, said friction plate yieldingly engaging said carriers to prevent vibratory movements thereof.

2. In a weft replenishing mechanism. a magazine having a frame and formed with a plurality of separate vertical compartments adapted to selectively deliver weft carriers at a common transfer position, and a pair of spring plates fixed to the lower end of said frame, said plates being downwardly and inwardly inclined from their points of attachment and having their free adjacent inner ends positioned to yieldingly support the tip of a weft carrier after it has been delivered to transfer position.

3. In a weft replenishing mechanism, a magazine, means to position a plurality of weft carriers in vertical series therein, and a yieldingly mounted friction plate adjacent each vertical series of weft carriers and engaging said carriers to prevent vibratory movements thereof, said plate being faced with frictional material.

4. In. a weft replenishing mechanism, a magazine, means to position a plurality of weft carriers in vertical series therein, spring plates fixed to said magazine, and friction plates mounted on said spring plates and yieldingly engaging each vertical series of weft carriers to prevent vibratory movements thereof.

5. In a weft replenishing mechanism, a magazine, means to position a plurality of weft carriers in vertical series therein, and a vertically disposed member adjacent each vertical series of weft carriers and yieldingly engaging said carriers to prevent vibratory movement thereof.

In testimony whereof I have hereunto aflixed my signature.

JAMES R. GOPLAND. 

